﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 常量声明
{
    class Program
    {
        //const 变量类型  变量名
        static void Main(string[] args)
        {
            const double PI = 3.14159265358979;//3238462643383279502384197;
            Console.WriteLine(PI);
        }
    }
}
